Apple Final Cut Pro HD (4.5): New Features - Manual (Page 101)

Chapter 7 External Audio and Video Monitoring 101
Compensating for Latency With Frame Offset
By changing the frame offset, you can compensate for the delay between your
computer display and external video and audio outputs. Frame offset is active only
when your sequence real-time effects are handled by Final Cut Pro. For information
about setting the Effects Handling tab of the Sequence Settings window, see Volume I,
Chapter 6, “Viewing and Setting Preferences,” in the Final Cut Pro 4 User’s Manual.
To set the frame offset between the computer display and the external video
and audio outputs:
1 Choose Final Cut Pro > System Settings.
2 Click the Playback Control tab.
3 Enter an amount (in whole frames) in the Frame Offset number field.
Frame offset can be any whole number between 0 and 30. The default value is 4. For
example, if a video monitor connected to your DV camcorder shows your program 4
frames later than your computer display, a frame offset of 4 will synchronize the two.
Note: Depending on your external monitor configuration, you may need to experiment
with frame offset values to synchronize the external monitor and the computer display.
4 Click OK.
5 In the Canvas or Viewer, play and compare the video offset between your external
monitor and your computer display.
6 If the computer display and external monitor are still not synchronized, repeat steps 1
through 5 using different frame offset values until the display and monitor are in sync.
Note: Final Cut Pro automatically compensates for latency in third-party audio cards if
proper Mac OS X CoreAudio drivers are provided.
UP01022.Book Page 101 Tuesday, March 23, 2004 7:32 PM